JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Sample Paper Topic Test - Ionic Equilibrium

  • question_answer
    Choose the correct order of strength of following acids.
    (i) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH\]
    (ii) \[~C{{H}_{3}}C{{H}_{2}}CH(Br)COOH\]
    (iii) \[C{{H}_{3}}CH(Br)C{{H}_{2}}COOH\]
    (IV) \[{{(C{{H}_{3}})}_{2}}CHCOOH\]

    A) I < II < III < IV

    B) IV < I < III < II

    C) IV < III < I < II

    D) II < I < III < IV

    Correct Answer: B

    Solution :

    [b] AlkyI group with + 1 effect decreases the acidic strength whereas with - 1 effect increases the acidic strength - 1 effect decreases with distance.
    \[\therefore \]  Increasing order of acidic strength is
    \[{{(C{{H}_{3}})}_{2}}CHCOOH<C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH\]
    \[<C{{H}_{3}}CH(Br)C{{H}_{2}}COOH<\]\[C{{H}_{3}}C{{H}_{2}}CH(Br)COOH\]


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